The A/Z dependence of projectile fragmentation at relativistic energies has been studied with theALADIN forward spectrometer at SIS. A stable beam of 124Sn and radioactive beams of 124La and 107Sn at600 MeV per nucleon have been used in order to explore a wide range of isotopic compositions. Chemicalfreeze-out temperatures are found to be nearly invariant with respect to the A/Z of the produced spectatorsources, consistent with predictions for expanded systems. Small Coulomb effects (DT =0.6 MeV)appear for residue production near the onset of multifragmentation.
Isotopic Dependence of the Nuclear Caloric Curve
SFIENTI C;DE NAPOLI M;IMME', Giuseppina;LYNEN U;
2009-01-01
Abstract
The A/Z dependence of projectile fragmentation at relativistic energies has been studied with theALADIN forward spectrometer at SIS. A stable beam of 124Sn and radioactive beams of 124La and 107Sn at600 MeV per nucleon have been used in order to explore a wide range of isotopic compositions. Chemicalfreeze-out temperatures are found to be nearly invariant with respect to the A/Z of the produced spectatorsources, consistent with predictions for expanded systems. Small Coulomb effects (DT =0.6 MeV)appear for residue production near the onset of multifragmentation.File in questo prodotto:
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